{"id":8611,"date":"2025-12-13T20:55:29","date_gmt":"2025-12-13T12:55:29","guid":{"rendered":"https:\/\/www.stvvalves.com\/?post_type=product&p=8611"},"modified":"2026-06-09T12:21:57","modified_gmt":"2026-06-09T04:21:57","slug":"bolt-bonnet-gate-valve-astm-a216-wc6-30-inch-300-lb-rf-end","status":"publish","type":"product","link":"https:\/\/www.stvvalves.com\/pt\/products\/bolt-bonnet-gate-valve-astm-a216-wc6-30-inch-300-lb-rf-end\/","title":{"rendered":"Bolt Bonnet Gate Valve , ASTM A216 WC6, 30 Inch, 300 LB ,RF End"},"content":{"rendered":"

High-Temperature Alloy Steel Gate Valve for Power Plant & Industrial Service<\/h2>\n

The Bolt Bonnet Gate Valve ASTM A216 WC6 30 Inch Class 300 RF End<\/strong> is engineered for high-temperature and medium-to-high pressure applications in power generation, petrochemical, refinery, and industrial processing systems. Manufactured from ASTM A217 WC6 chrome-moly alloy steel<\/strong> (commonly specified for elevated temperature service), this valve provides excellent mechanical strength, thermal stability, and long-term reliability under demanding operating conditions.<\/p>\n

Designed in accordance with API 600<\/span><\/span> and ASME B16.34<\/span><\/span>, the valve features a robust bolted bonnet construction<\/strong>, 30-inch (DN750)<\/strong> size, ASME Class 300 pressure rating<\/strong>, and Raised Face (RF) flanged ends<\/strong>.<\/p>\n

The gate valve design offers full-port flow with minimal pressure drop, making it ideal for isolation service in critical pipeline systems.<\/p>\n

<\/h2>\n
\n

Product Features<\/h1>\n

ASTM A217 WC6 Alloy Steel Construction<\/h3>\n

WC6 is a chromium-molybdenum alloy steel widely used in high-temperature service.<\/p>\n

Advantages include:<\/p>\n

    \n
  • Excellent creep resistance<\/li>\n
  • High-temperature strength<\/li>\n
  • Good thermal fatigue resistance<\/li>\n
  • Long service life<\/li>\n
  • Suitable for steam and thermal fluid applications<\/li>\n<\/ul>\n
    \n

    Bolted Bonnet Design<\/h3>\n

    The bolted bonnet construction provides:<\/p>\n

      \n
    • Easy maintenance<\/li>\n
    • Reliable sealing performance<\/li>\n
    • Simplified inspection procedures<\/li>\n
    • Cost-effective servicing<\/li>\n<\/ul>\n

      This design is commonly used in Class 150 to Class 600 valve applications.<\/p>\n

      \n

      Full-Port Flow Path<\/h3>\n

      When fully open, the gate moves completely out of the flow stream.<\/p>\n

      Benefits include:<\/p>\n

        \n
      • Minimal pressure loss<\/li>\n
      • Maximum flow efficiency<\/li>\n
      • Reduced turbulence<\/li>\n
      • Lower energy consumption<\/li>\n<\/ul>\n
        \n

        Renewable Seat Rings<\/h3>\n

        Replaceable seat rings help:<\/p>\n

          \n
        • Extend valve life<\/li>\n
        • Reduce maintenance costs<\/li>\n
        • Improve long-term reliability<\/li>\n<\/ul>\n
          \n

          Technical Specifications<\/h1>\n
          \n
          \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
          Item<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
          Product Name<\/td>\nBolt Bonnet Gate Valve<\/td>\n<\/tr>\n
          Valve Type<\/td>\nGate Valve<\/td>\n<\/tr>\n
          Size<\/td>\n30 Inch (DN750)<\/td>\n<\/tr>\n
          Pressure Class<\/td>\nASME Class 300<\/td>\n<\/tr>\n
          Body Material<\/td>\nASTM A217 WC6<\/td>\n<\/tr>\n
          Bonnet Material<\/td>\nASTM A217 WC6<\/td>\n<\/tr>\n
          Stem Material<\/td>\nASTM A182 F6a \/ F11<\/td>\n<\/tr>\n
          Disc Material<\/td>\nWC6 + 13Cr Overlay<\/td>\n<\/tr>\n
          Seat Material<\/td>\n13Cr Stainless Steel<\/td>\n<\/tr>\n
          Design Standard<\/td>\nAPI 600<\/td>\n<\/tr>\n
          Pressure Rating<\/td>\nASME B16.34<\/td>\n<\/tr>\n
          Face-to-Face<\/td>\nASME B16.10<\/td>\n<\/tr>\n
          Flange Standard<\/td>\nASME B16.5<\/td>\n<\/tr>\n
          End Connection<\/td>\nRF (Raised Face)<\/td>\n<\/tr>\n
          Inspection & Testing<\/td>\nAPI 598<\/td>\n<\/tr>\n
          Bonnet Type<\/td>\nBolted Bonnet<\/td>\n<\/tr>\n
          Operation<\/td>\nHandwheel \/ Gearbox<\/td>\n<\/tr>\n
          Optional Actuation<\/td>\nElectric \/ Pneumatic<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
          \n

          Why Choose WC6 Alloy Steel?<\/h1>\n

          Superior High-Temperature Performance<\/h2>\n

          WC6 material is commonly selected for:<\/p>\n

            \n
          • Main steam lines<\/li>\n
          • Boiler systems<\/li>\n
          • Turbine applications<\/li>\n
          • Thermal oil systems<\/li>\n<\/ul>\n

            because of its ability to maintain strength at elevated temperatures.<\/p>\n

            \n

            Excellent Creep Resistance<\/h2>\n

            The chromium-molybdenum composition provides long-term stability during continuous operation under heat and pressure.<\/p>\n

            \n

            Improved Oxidation Resistance<\/h2>\n

            Compared with standard carbon steel valves, WC6 offers enhanced resistance to high-temperature oxidation.<\/p>\n

            \n

            Reduced Maintenance Costs<\/h2>\n

            The material’s durability contributes to:<\/p>\n

              \n
            • Longer service intervals<\/li>\n
            • Reduced downtime<\/li>\n
            • Lower lifecycle costs<\/li>\n<\/ul>\n
              \n

              Applications<\/h1>\n

              Thermal Power Plants<\/h2>\n
              \n
              \n
              \n
              \"https:\/\/images.openai.com\/static-rsc-4\/lHprweHZCrC0dHe2lL2fzQtbLgvqzjVBMON9kmhlI9KelHZhzSTkgcLFQBjYHiK4f1zFBtOlVy_qOUabgxkPD3G7KBU1r1Q4M2H0FAuXkck970_Vc59DZSi0rdTfV-ikMGn2Ba9MRc2PEjL29rM49l0dbggOc9PrChs7RSQdMG1GMn_LMKG-gybTpeq4u3Gv?purpose=fullsize\"<\/div>\n<\/div>\n<\/div>\n
              \n
              \n
              \"https:\/\/images.openai.com\/static-rsc-4\/RKVAk3upur2p5xLLBStIZXYU4LPRTK5pNC_CQNKJNiHoMEyq4aZSAhO6TY7fvXqDgxyFmNVJ3EFB1lg95dOjLG9eCSx26VVFRMXhrBiyKfBrYt5aOafdA-G4w1NyKHuEHwRHY_VNnQZVlTbAs4Hh-_6QoGVqGldkdxLGatxr5RRugng-kfi8oziYwxVLNMtI?purpose=fullsize\"<\/div>\n<\/div>\n<\/div>\n
              \n
              \n
              \"https:\/\/images.openai.com\/static-rsc-4\/UQMvUFvXpBdQnWcnW1h_fNFhKK3At_HFoxEtM9LwlRB-qsEZAfPdGCypDGhX0l0SuHVduOPJDiO1-fDG3Tpn3tmzExgpj9bFVqYBoxvEiqvd8TLgBB6vWwViXIqPHgqgIwJZsSZOUn06O9V5OpasbsgPwPYDF6Qqoj_rJiTrU6WNLRb6tTZ2NuJMFHbKh8xA?purpose=fullsize\"<\/div>\n
              \n
              \n
              5<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

              Commonly used in:<\/p>\n

                \n
              • Main steam pipelines<\/li>\n
              • Reheat steam systems<\/li>\n
              • Boiler auxiliary systems<\/li>\n
              • Turbine isolation service<\/li>\n<\/ul>\n
                \n

                Petrochemical Industry<\/h2>\n

                Suitable for:<\/p>\n

                  \n
                • High-temperature process lines<\/li>\n
                • Hydrocarbon processing<\/li>\n
                • Utility systems<\/li>\n
                • Heat transfer applications<\/li>\n<\/ul>\n
                  \n

                  Oil & Gas Facilities<\/h2>\n

                  Used in:<\/p>\n

                    \n
                  • Refinery process units<\/li>\n
                  • Thermal oil systems<\/li>\n
                  • Utility steam systems<\/li>\n
                  • Pipeline isolation<\/li>\n<\/ul>\n
                    \n

                    Industrial Processing Plants<\/h2>\n

                    Ideal for:<\/p>\n

                      \n
                    • Chemical plants<\/li>\n
                    • Fertilizer facilities<\/li>\n
                    • Pulp and paper mills<\/li>\n
                    • Steel manufacturing<\/li>\n<\/ul>\n
                      \n

                      Working Principle<\/h1>\n

                      The gate valve operates through a linear-motion gate mechanism.<\/p>\n

                      Opening<\/h3>\n
                        \n
                      1. Handwheel or gearbox is operated.<\/li>\n
                      2. Stem raises vertically.<\/li>\n
                      3. Gate lifts completely from the flow path.<\/li>\n
                      4. Full flow capacity is achieved.<\/li>\n<\/ol>\n

                        Closing<\/h3>\n
                          \n
                        1. Stem lowers the gate.<\/li>\n
                        2. Gate contacts both seat rings.<\/li>\n
                        3. Tight shutoff is achieved.<\/li>\n
                        4. Flow is fully isolated.<\/li>\n<\/ol>\n

                          Because the gate moves completely out of the flow stream when open, pressure loss remains extremely low.<\/p>\n

                          \n

                          Quality Assurance & Testing<\/h1>\n

                          Every valve undergoes comprehensive quality control procedures.<\/p>\n

                          Standard Testing<\/h3>\n
                            \n
                          • Hydrostatic Shell Test<\/li>\n
                          • Seat Leakage Test<\/li>\n
                          • Backseat Test<\/li>\n
                          • Material PMI Verification<\/li>\n
                          • Dimensional Inspection<\/li>\n
                          • Functional Operation Test<\/li>\n<\/ul>\n

                            Testing is performed according to:<\/p>\n

                              \n
                            • API 598<\/span><\/span><\/li>\n
                            • MSS SP-61<\/span><\/span><\/li>\n<\/ul>\n
                              \n

                              Optional Configurations<\/h1>\n

                              Actuation Options<\/h2>\n
                                \n
                              • Electric Actuator<\/li>\n
                              • Pneumatic Actuator<\/li>\n
                              • Hydraulic Actuator<\/li>\n
                              • Bevel Gear Operator<\/li>\n<\/ul>\n
                                \n

                                Special Trim Options<\/h2>\n
                                  \n
                                • API Trim 5<\/li>\n
                                • API Trim 8<\/li>\n
                                • API Trim 10<\/li>\n
                                • Stellite Hard-Faced Trim<\/li>\n<\/ul>\n
                                  \n

                                  Additional Standards Available<\/h2>\n
                                    \n
                                  • NACE MR0175 Sour Service<\/li>\n
                                  • Fire Safe Design<\/li>\n
                                  • Low Emission Packing<\/li>\n
                                  • Extended Bonnet Design<\/li>\n<\/ul>\n
                                    \n

                                    Documentation Available<\/h1>\n

                                    We can provide:<\/p>\n

                                    \u2705 Product Datasheet
                                    \u2705 General Arrangement Drawing
                                    \u2705 Material Test Certificate (EN 10204 3.1)
                                    \u2705 Hydrostatic Test Report
                                    \u2705 Inspection Report
                                    \u2705 Installation Manual
                                    \u2705 Operation & Maintenance Manual<\/p>\n

                                    \n

                                    Frequently Asked Questions<\/h1>\n

                                    What is ASTM A217 WC6?<\/h2>\n

                                    ASTM A217 WC6 is a chromium-molybdenum alloy steel designed for elevated temperature and pressure service.<\/p>\n

                                    \n

                                    Why choose a bolted bonnet gate valve?<\/h2>\n

                                    Bolted bonnet valves provide easy maintenance access and are widely used in Class 150\u2013600 applications.<\/p>\n

                                    \n

                                    What industries commonly use WC6 gate valves?<\/h2>\n

                                    Typical industries include:<\/p>\n

                                      \n
                                    • Power Generation<\/li>\n
                                    • Petrochemical<\/li>\n
                                    • Refining<\/li>\n
                                    • Chemical Processing<\/li>\n
                                    • Industrial Steam Systems<\/li>\n<\/ul>\n
                                      \n

                                      Is the valve suitable for steam service?<\/h2>\n

                                      Yes. WC6 alloy steel is specifically designed for high-temperature steam applications.<\/p>\n

                                      \n

                                      Can the valve be automated?<\/h2>\n

                                      Yes. Electric, pneumatic, and hydraulic actuators are available upon request.<\/p>\n

                                      \n

                                      Related Products<\/h1>\n
                                        \n
                                      • WC9 Gate Valve<\/li>\n
                                      • F11 Gate Valve<\/li>\n
                                      • F22 Gate Valve<\/li>\n
                                      • F91 Gate Valve<\/li>\n
                                      • Pressure Seal Gate Valve<\/li>\n
                                      • API 600 Globe Valve<\/li>\n
                                      • High Temperature Check Valve<\/li>\n<\/ul>\n
                                        \n

                                        Request a Quote<\/h1>\n

                                        Looking for a Reliable WC6 Gate Valve Manufacturer?<\/h2>\n

                                        We offer:<\/p>\n

                                        \u2705 Factory Direct Pricing
                                        \u2705 Fast Production Lead Times
                                        \u2705 OEM & Private Label Services
                                        \u2705 Third-Party Inspection Support
                                        \u2705 Worldwide Export Experience
                                        \u2705 Complete Technical Documentation<\/p>\n

                                        Send Your Inquiry Today<\/h3>\n

                                        Please provide:<\/p>\n

                                          \n
                                        • Valve Size (30 Inch \/ DN750)<\/li>\n
                                        • Operating Temperature<\/li>\n
                                        • Working Pressure<\/li>\n
                                        • Media Type<\/li>\n
                                        • Quantity Required<\/li>\n
                                        • Project Specification<\/li>\n<\/ul>\n

                                          Our engineering team will respond with a detailed quotation, datasheet, and delivery schedule within 24 hours.<\/p>\n

                                          SEO Keywords:<\/strong> Bolt Bonnet Gate Valve, ASTM A217 WC6 Gate Valve, 30 Inch Gate Valve, Class 300 Gate Valve, RF End Gate Valve, Alloy Steel Gate Valve, High Temperature Gate Valve, API 600 Gate Valve Manufacturer, Power Plant Gate Valve Supplier.<\/p>\n

                                           <\/p>\n","protected":false},"excerpt":{"rendered":"

                                          STV Valve Technology Group Co., Ltd is China 30 Inch Gate Valve, Bolt Bonnet Gate Valve , ASTM A216 WCB 30 Inch Gate Valve, 30 Inch Gate Valve, 300 LB 30 Inch Gate Valve ,RF End 30 Inch Gate Valve,\u00a0 30 Inch Gate Valve manufacturer with high quality and low price.<\/p>\n

                                           <\/p>\n

                                           <\/p>","protected":false},"featured_media":8612,"template":"","meta":[],"product_brand":[],"product_cat":[44,58],"product_tag":[3826,3829,3827,3825,196,3830,3828],"class_list":{"0":"post-8611","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-gate-valve","7":"product_cat-cast-steel-gate-valve","8":"product_tag-30-inch-gate-valve","9":"product_tag-30-inch-gate-valve-manufacturer","10":"product_tag-300-lb-30-inch-gate-valve","11":"product_tag-astm-a216-wcb-30-inch-gate-valve","12":"product_tag-bolt-bonnet-gate-valve","13":"product_tag-china-30-inch-gate-valve","14":"product_tag-rf-end-30-inch-gate-valve","16":"first","17":"instock","18":"shipping-taxable","19":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.stvvalves.com\/pt\/wp-json\/wp\/v2\/product\/8611","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.stvvalves.com\/pt\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.stvvalves.com\/pt\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.stvvalves.com\/pt\/wp-json\/wp\/v2\/media\/8612"}],"wp:attachment":[{"href":"https:\/\/www.stvvalves.com\/pt\/wp-json\/wp\/v2\/media?parent=8611"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.stvvalves.com\/pt\/wp-json\/wp\/v2\/product_brand?post=8611"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.stvvalves.com\/pt\/wp-json\/wp\/v2\/product_cat?post=8611"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.stvvalves.com\/pt\/wp-json\/wp\/v2\/product_tag?post=8611"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}